Amiga System Devices, 
  accessing functions, 
  asynchronous I/O requests, 
  closing, 
  commands, 
  definition, 
  device base address pointer, 
  device names, 
  device specific command prefixes, 
  devices with functions, 
  error checking, 
  error indications, 
  error processing, 
  error reporting, 
  Exec command prefixes, 
  gracefully exiting, 
  opening, 
  passing I/O requests, 
  synchronous I/O requests,